Yankee Candle Blue Snowflake - Night Light Scent-Plug Base Get more power of choice for less! Scent-Plug Air Fresheners come with decorator shades in a choice of colors. They also come without fragrance oil, so it's easier to pick the authentic Yankee Candle fragrances you want. Of course, you still get the same great adjustable intensity, reliable 24/7 fragrancing. Designed to work with our Scentplug refill (sold separately). Unit Life: Up to 2 years